Building slab, plate, or member



H. FRITZ BUILDING SLAB, PLATE, OR MEMBER June 18, 11929.

Filed oct. 1; 192e iii/ii;

i /I /Nm 13 Patented June 18, 1929.

UNITED STATES PATENT oFFlcs.

HANS FRITZ, OF INNSBRUCK, AUSTRIA, ASSIGNOR TO MATHMAH GESELLSCHAFT MIT l BESCHRNKTER HAFT-UNG, `OF` WIESBDADEN, GERMANY', AfCOMPANY OF GER- MANY.

BUILDING SLAB, PLATE, OR MEMBER.

Application led October 1, 1926, Serial No. 138,991, "an 'in Austria October 15, 1925.

This invention relates to improvements in building slabs7 plates or members which are of simple construction and of great strength and carrying capacity and are well suited not only for erecting walls and ceilings, but also for root'- and supporting structures.

In my prior Patent No. 1,553,037 I have described a skeleton or grid member which consists of battensorlaths halved into one another to form a numberof cells, whichl are covered at each side by a lining common to all cells of a grid member. A liningl of this kind possesses the drawback, that it cannotV brace up and thus secure the correct angular position of the individual cells of each grid member. Further a lining of this considerable size does not fit in such a manner, that a. completely closed air compartment is formed .in each cell of the'grid member, and l in casethe lining consists of a cement-like material, it will easily-break and therefore has to be made of considerable thickness.

According to the present invention a member of a cement-like material and heat-insulating character is inserted into each cell of the grid member in such manner, that a completely closed air compartment is formed in each cell of the grid member. A member of this kind fitted into-the cell braces up and thus secures the correct angular position of the individual cells of each grid member. f

The building member constructed according to the present invention may be covered with plaster at the outside 'or veneered with wood or compressed material or covered with any desired material. In case the member is ooveredwith plaster, it is of advantage to allow the insertion members to project somewhat beyond the edges of the Wooden skeleton, so that lattice grooves are formed, for anchoring the plaster to the insertion members.

@ne mode of carrying out the present invention is illustrated by way of example on the accompanying sheet of drawings in which F l is a perspective view, partly in seetion, ofa part of a plate constructed according to the present invention.

Fig. 2 is a perspective view of a plate on a reduced scale.

Fig. 3 is a detail view.

In the illustrated embodiment the skeleton consists of laths or battens, the width of inner strip of the lathA l.

which corresponds tothe thickness of the plate to be formed. At the crossing places the laths engage each other in cog-like manner. Atboth sides the lath 1 is furnished with recesses or slots 2 which, in the illustrated embodiment, are of a depth yof about one third of the width of the lath. Inv this way the lath 1 is,so to say, divided into three longitudinal strips of like width, wherebyA however the inner strip passes right through from end to end of the lath, while the two outer strips are provided with slots 2 which are spaced apa-rt at suitable distances and eX- tend to the inner strip. The skeleton-walls disposed vertically with respect to the lath 1,

are formed by battens 3 and 3', the width of the hatten 3 extending over two-thirds of the `width of the lath 1 and at one side the batten is provided with slots 4, the depth of which exactly correspond to the width of the inner strip of the lath l. The hatten 3 is pushed into the slots of the lath 1, whereby the batten 3 entirely fills out the slots 2 of the lath, while the slot 4 of thev batten 3 is filled out by the Now the batten 3 is pushed into the opposite slot of the lath 1.

Thus the lath 1 is provided with an inner or middle strip, extending from one end of the lath, to the other end thereof, while the batten 3 is furnished with two lateral strips extending from one end of the batten to the other end thereof, one of the said lateral strips being. formed by the supplementary batten 3. T he skeleton constructed in this manner cannot become warped or buckle in any direction and thus forms a rigid skeleton for the build- -ing slabs, plates or members.

At both outsides the individual cells are -closed by insertion members 5 of a fireproof insulating material, such as wood concrete,

yslag concrete or the like. A prop or st-ay 6 is disposed diagonally in each cell and supports the two insertion members 5 with respect to one another, so as to form a smooth outer wall-face. f

The props or stays 6 correspond in width to the width of the laths reduced by the thickness of the insertion members and the longitudinal edges of the former engage grooves of the latter, so that the props and insertion members form a unit. lVhen manufacturing the plates, the insertion members are secured to one side of the plates, now the props or stays 6 are introduced from the back into cells and finally the members 5 are inserted at the other side. The outer sides of the laths are chamfered, in order that the insertion members may rest as close as possible against the insertion. members of the adjacent cells and the wood is not visible at the outside.

.recesses 7 are provided at the ends of the laths l, the base of the said recesses extending at an angle and battens or fillets 8, provided with a groove 9, are cemented into the recesses 7 of the laths. The ends of the battens 3 are `similarly recessed and provided with lillets.v ln this manner two grooves are il'ormed right round the plates which on being placed side by side term a hollow space iter the reception o'l a tongue 10 'lor binding together the plates. The lillets 8 also form anchorage members tor the insertion members introduced into the outer cells. T he battens 3 and 3( are furnished with grooves l1, which are engaged by an extension ot the insertion member 5', and an extension of the Vinsertion member passes underneath the fillet 8, whereby the said member is immovably secured in the cell. The props or stays G, which are inserted in the cells, supplement themselves to diagonally disposed supporting members, so that in conjunction wi th the -laths l and battens 3 they torni a skeleton,

which passes right through the plates and impart a great strength to the building plate. Owing to the provision of the hollow spaces, formed bythe individual cells, the sound is deadened and the heat is isolated and thus the plate, constructed according to the present invention, forms an ideal building member tor walls, ceilings and roots.

lf desired the props or stays G may be dispensed with. Y

riChe 'building plates according to the present invention are iireproof and can bekcovered with plaster, veneer or the like. In the last event it is of' advantage to dispense'with the chamfering olf the laths ot which the skeleton is termed7 so that the wood cannot warp owing to the crosswise directed libres oi the wood.

At lthe edges half-cells are formed, because the end ot the skeleton has the appearance ot a cell which is cut through in the middle. yl`hus at all edges a number oft depressions are formed which. are open at the outside. On erecting the plates, members are inserted in these depressions, which engage the halfcells of the adjacent plates, whereby the plates interengage with one another.

In a building member consisting of a grid member termed by laths halved into one another to constitute a number of cells lined by plates, the provision of a plate of a cementlike material and heat-insulating character for each individual cell, each plate being inserted into the side of each cell, so that ar completely closed air compartment isformed in each cell and the plate itted into the cell braces up and thus secures the correct angular position ot the individual cells.

.ln testimony whereof I affix my signature.

HANS FR1TZ. 

